I have a pumpkin - where's the competition?

Here's my pumpkin. It was pollinated on 8/11 so I decided I'm going for the latest pollination date category in the competition. It's measuring 17" in circumference after 9 days, almost 2"/day. If it keeps up and we don't get an early frost it could grow another 52" by Sept 15.

I've been peeking over a few neighbors fences and just on my street alone I know of 2 pumpkins that are at least 3x bigger than mine. I also heard from neighbor Mark that he's having problems with cross pollination and his pumpkins are looking more like spaghetti squashes and falling off the vine. The leaves on his plant don't look like pumpkin leaves but he swears they are the seeds I gave him. Is anybody else having this problem?

There's got to be somebody else in the neighborhood that can give neighbor Dave a little competition. His pump is over 68" in circumference now but he says it is slowing down. I keep telling him he better watch out, mine could catch up to his since the weather is cooling off and is more conducive to growing than back in July when it was so hot and his was starting.